对多重抗除草剂的加拿大小飞蛾(Conyza canadensis, L.)在羽化后施用哪些除草剂最有效?Cronq。玉米?

IF 1.7 4区农林科学 Q2 AGRICULTURE, MULTIDISCIPLINARY

Journal of Agricultural Science Pub Date : 2023-08-15 DOI:10.5539/jas.v15n9p1

N. Soltani, C. Willemse, P. Sikkema

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引用次数: 0

摘要

多重抗除草剂(MHR) Canada fleabane [Conyza Canada (L.)]Cronq。[gm66nd]的控制已成为安大略省玉米生产商的主要担忧。苗期除草剂是控制玉米中出现的MHR加拿大藜麦的关键除草剂。在安大略省西南部已证实存在MHR Canada fleabane的农田中进行了5项田间试验，以评价施用POST的各种除草剂混合物对玉米中MHR Canada fleabane的防治效果。草甘膦+ 2,4- d胺，草甘膦/2,4- d胆碱，草甘膦+氯吡酯，草甘膦+ s -甲草胺/中三甲酮/双氯吡酮，草甘膦+甲吡酯+阿特拉津，草甘膦+ s -甲草胺/中三甲酮/阿特拉津，草甘膦+ s -甲草胺/中三甲酮/阿特拉津，草甘膦+ s -甲草胺/中三甲酮/阿特拉津，草甘膦+ s -甲草胺/中三甲酮/阿特拉津，草甘膦/ s -甲草胺/中三甲酮/阿特拉津，草甘膦/ s -甲草胺/中三甲酮/阿特拉津，草甘膦/ s -甲草胺/中三甲酮+阿特拉津，草甘膦/ s -甲草胺/中三甲酮+阿特拉津，草甘膦/ s -甲草胺/中三甲酮+阿特拉津，草甘膦+腾博三酮+溴虫腈，草甘膦/麦草枯+腾博三酮+阿特拉津，以及草甘膦+腾博三酮+阿特拉津施用POST后，玉米MHR Canada fleabane的控制效果为63-99%，密度降低77-100%，地上部生物量降低88-100%。MHR加拿大fleabane干扰使玉米产量降低58%;所有除草剂处理减少了MHR加拿大fleabane干扰，导致玉米产量与无杂草控制相似。本研究结果表明，在所评价的除草剂组合中，草甘膦+中三酮+阿特拉津、草甘膦+溴苯醚+阿特拉津、草甘膦+ s -异丙胺/中三酮/双环吡酮/阿特拉津、草甘膦/ s -异丙胺/中三酮+阿特拉津、草甘膦/麦草畏+腾博三酮+溴苯三酮、草甘膦/麦草畏+腾博三酮+阿特拉津、草甘膦/麦草畏+腾博三酮+阿特拉津、草甘膦+腾博三酮+腾博三酮、草甘膦+腾博三酮+阿特拉津、草甘膦+腾博三酮+阿特拉津施用POST对玉米MHR加拿大fleabane的控制效果最为一致。

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What Are the Most Efficacious Herbicides Applied Postemergence for Control of Multiple-Herbicide-Resistant Canada Fleabane [Conyza canadensis (L.) Cronq.] in Corn?

Multiple-herbicide-resistant (MHR) Canada fleabane [Conyza canadensis (L.) Cronq.] control has become a major concern for corn producers in Ontario. Postemergence (POST) herbicides are critical for the control of emerged MHR Canada fleabane in corn. A study that consisted of five field experiments was conducted in southwestern Ontario in fields with confirmed MHR Canada fleabane to evaluate various herbicide mixtures applied POST for the control of MHR Canada fleabane in corn. Glyphosate + 2,4-D amine, glyphosate/2,4-D choline, glyphosate + clopyralid, glyphosate + S-metolachlor/mesotrione/bicyclopyrone, glyphosate + tolpyralate + atrazine, glyphosate + dicamba, glyphosate + dicamba/atrazine, glyphosate + S-metolachlor/mesotrione/ atrazine, glyphosate + mesotrione + atrazine, glyphosate + bromoxynil + atrazine, glyphosate + S-metolachlor/ mesotrione/bicyclopyrone/atrazine, glyphosate/S-metolachlor/mesotrione + atrazine, glyphosate/dicamba + tembotrione, glyphosate + tembotrione + bromoxynil, glyphosate/dicamba + tembotrione + atrazine, and glyphosate + tembotrione + atrazine applied POST provided 63-99% control, 77-100% density reduction, and 88-100% shoot biomass reduction of MHR Canada fleabane in corn. MHR Canada fleabane interference reduced corn yield up to 58%; reduced MHR Canada fleabane interference with all herbicide treatments resulted in corn yield similar to the weed-free control. Results of this study indicate that among the herbicide mixtures evaluated glyphosate + mesotrione + atrazine, glyphosate + bromoxynil + atrazine, glyphosate + S-metolachlor/ mesotrione/bicyclopyrone/atrazine, glyphosate/S-metolachlor/mesotrione + atrazine, glyphosate/dicamba + tembotrione, glyphosate + tembotrione + bromoxynil, glyphosate/dicamba + tembotrione + atrazine, and glyphosate + tembotrione + atrazine applied POST provided the most consistent control of MHR Canada fleabane in corn.

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来源期刊

Journal of Agricultural Science 农林科学-农业综合

CiteScore

2.80

自引率

5.00%

发文量

审稿时长

1.4 months

期刊介绍： The Journal of Agricultural Science publishes papers concerned with the advance of agriculture and the use of land resources throughout the world. It publishes original scientific work related to strategic and applied studies in all aspects of agricultural science and exploited species, as well as reviews of scientific topics of current agricultural relevance. Specific topics of interest include (but are not confined to): all aspects of crop and animal physiology, modelling of crop and animal systems, the scientific underpinning of agronomy and husbandry, animal welfare and behaviour, soil science, plant and animal product quality, plant and animal nutrition, engineering solutions, decision support systems, land use, environmental impacts of agriculture and forestry, impacts of climate change, rural biodiversity, experimental design and statistical analysis, and the application of new analytical and study methods (including genetic diversity and molecular biology approaches). The journal also publishes book reviews and letters. Occasional themed issues are published which have recently included centenary reviews, wheat papers and modelling animal systems.